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Fluidization and wall slip of soft glassy materials by controlled surface roughness.
Phys Rev E. 2017 May; 95(5-1):052602.PR

Abstract

We present a comprehensive study of concentrated emulsions flowing in microfluidic channels, one wall of which is patterned with micron-size equally spaced grooves oriented perpendicularly to the flow direction. We find a scaling law describing the roughness-induced fluidization as a function of the density of the grooves, thus fluidization can be predicted and quantitatively regulated. This suggests common scenarios for droplet trapping and release, potentially applicable for other jammed systems as well. Numerical simulations confirm these views and provide a direct link between fluidization and the spatial distribution of plastic rearrangements.

Authors+Show Affiliations

Dipartimento di Fisica e Astronomia "G. Galilei"-DFA and Sezione CNISM, Università di Padova, Via Marzolo 8, 35131 Padova, Italy.Dipartimento di Fisica e Astronomia "G. Galilei"-DFA and Sezione CNISM, Università di Padova, Via Marzolo 8, 35131 Padova, Italy.Dipartimento di Fisica e Astronomia "G. Galilei"-DFA and Sezione CNISM, Università di Padova, Via Marzolo 8, 35131 Padova, Italy.Dipartimento di Fisica e Astronomia "G. Galilei"-DFA and Sezione CNISM, Università di Padova, Via Marzolo 8, 35131 Padova, Italy.Dipartimento di Fisica, Università di Roma "Tor Vergata" and INFN, Via della Ricerca Scientifica, 1, 00133 Roma, Italy.Dipartimento di Fisica, Università di Roma "Tor Vergata" and INFN, Via della Ricerca Scientifica, 1, 00133 Roma, Italy.Istituto per le Applicazioni del Calcolo CNR, Via dei Taurini, 9, 00185 Roma, Italy.Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28618470

Citation

Derzsi, Ladislav, et al. "Fluidization and Wall Slip of Soft Glassy Materials By Controlled Surface Roughness." Physical Review. E, vol. 95, no. 5-1, 2017, p. 052602.
Derzsi L, Filippi D, Mistura G, et al. Fluidization and wall slip of soft glassy materials by controlled surface roughness. Phys Rev E. 2017;95(5-1):052602.
Derzsi, L., Filippi, D., Mistura, G., Pierno, M., Lulli, M., Sbragaglia, M., Bernaschi, M., & Garstecki, P. (2017). Fluidization and wall slip of soft glassy materials by controlled surface roughness. Physical Review. E, 95(5-1), 052602. https://doi.org/10.1103/PhysRevE.95.052602
Derzsi L, et al. Fluidization and Wall Slip of Soft Glassy Materials By Controlled Surface Roughness. Phys Rev E. 2017;95(5-1):052602. PubMed PMID: 28618470.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fluidization and wall slip of soft glassy materials by controlled surface roughness. AU - Derzsi,Ladislav, AU - Filippi,Daniele, AU - Mistura,Giampaolo, AU - Pierno,Matteo, AU - Lulli,Matteo, AU - Sbragaglia,Mauro, AU - Bernaschi,Massimo, AU - Garstecki,Piotr, Y1 - 2017/05/04/ PY - 2016/11/07/received PY - 2017/6/17/entrez PY - 2017/6/18/pubmed PY - 2017/6/18/medline SP - 052602 EP - 052602 JF - Physical review. E JO - Phys Rev E VL - 95 IS - 5-1 N2 - We present a comprehensive study of concentrated emulsions flowing in microfluidic channels, one wall of which is patterned with micron-size equally spaced grooves oriented perpendicularly to the flow direction. We find a scaling law describing the roughness-induced fluidization as a function of the density of the grooves, thus fluidization can be predicted and quantitatively regulated. This suggests common scenarios for droplet trapping and release, potentially applicable for other jammed systems as well. Numerical simulations confirm these views and provide a direct link between fluidization and the spatial distribution of plastic rearrangements. SN - 2470-0053 UR - https://www.unboundmedicine.com/medline/citation/28618470/Fluidization_and_wall_slip_of_soft_glassy_materials_by_controlled_surface_roughness DB - PRIME DP - Unbound Medicine ER -
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